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49 results for “Pheasant”
Hot-headed peckers: thermographic changes during aggression among juvenile pheasants (Phasianus colchicus)
<p>In group-living vertebrates, dominance status often covaries with physiological measurements (e.g. glucocorticoid levels), but it is unclear how dominance is linked to dynamic changes in physiological state over a shorter, behavioural timescale. In this observational study, we recorded spontaneous aggression among captive juvenile pheasants (<em>Phasianus colchicus</em>) alongside infrared thermographic measurements of their external temperature, a non-invasive technique previously used to examine stress responses in non-social contexts, where peripheral blood is redirected towards the body core. We found low but highly significant repeatability in maximum head temperature, suggesting individually consistent thermal profiles, and some indication of lower head temperatures in more active behavioural states (e.g. walking compared to resting). These individual differences were partly associated with sex, females being cooler on average than males, but unrelated to body size. During pairwise aggressive encounters, we observed a non-monotonic temperature change, with head temperature dropping rapidly immediately prior to an attack and increasing rapidly afterwards, before returning to baseline levels. This nonlinear pattern was similar for birds in aggressor and recipient roles, but aggressors were slightly hotter on average. Our findings show that aggressive interactions induce rapid temperature changes in dominants and subordinates alike, and highlight infrared thermography as a promising tool for investigating the physiological basis of pecking orders in galliforms.</p>
Fig. 6 in The First Records Of The Common Pheasant, P H A S I A N U S C O L C H I C U S (Av E S: G A L L I F O R M E S: Phasianidae), And Its Group In South-Eastern Latvia
Fig. 6. The northern border of the distribution area of Phasianus colchicus in the Far East (Beme et al. 1987).
Fig. 2 in The First Records Of The Common Pheasant, P H A S I A N U S C O L C H I C U S (Av E S: G A L L I F O R M E S: Phasianidae), And Its Group In South-Eastern Latvia
Fig. 2. The place of the observation of the Phasianus colchicus group. One day before: the Capreolus сapreolus have been dug last year's apples out of the snow 4 – 6 cm in depth. 2015.02.10.
Fig. 1 in Coccidial fauna of pheasants (Phasianus colchicus colchicus)
Fig. 1. Coccidial fauna of pheasants (Phasianus colchicus colchicus): A — Eimeria colchici; B — Eimeria duodenalis; C — Eimeria phasiani; D — İsospora sp.
Figure 4 in Genetic structure and population dynamics of the silver pheasant (Lophura nycthemera) in southern China
Figure 4. Bayesian tree based on mitochondrial haplotypes (1053 bp, selected model of HKY+I+G). It exhibits the phylogenetic relationships of silver pheasant, and three species (L. hatinhensis, L. leucomelanos, and L. swinhoii) are noticeable outgroups. Above branches there are numbers indicating Bayesian posterior probabilities, whereas below branches there are bootstrap values produced by ML. Each colored line represents a geographic population, while the line in black represents the shared haplotype.
Figure 3 in Genetic structure and population dynamics of the silver pheasant (Lophura nycthemera) in southern China
Figure 3. mtDNA MJN for silver pheasant. Circle size represents proportion of haplotype. Circles with single color indicate a private haplotype, whereas circles with two or more colors represent a shared haplotype.
Figure 1 in Genetic structure and population dynamics of the silver pheasant (Lophura nycthemera) in southern China
Figure 1. According to geodistance and topographic characters, we sorted sampling sites into geographic populations. The sampling sites including 7 provinces: Sichuan, Anhui, Jiangxi, Fujian, Zhejiang, Hubei, and Hunan. The abbreviation are as follows: Sichuan (SC), Anhui (AH), Jiangxi (JX), Fujian (FJ), Zhejiang (ZJ), Hubei (HB), Hunan (HN).
Figure 2 in Genetic structure and population dynamics of the silver pheasant (Lophura nycthemera) in southern China
Figure 2. Bayesian skyline plot of whole population of silver pheasant. The expansion time was computed by tau = 2µkt. The solid line means the estimated average effective population size and the dashed line represents 95% confidence interval.
Figure 1. Distribution map of the study area showing four localities in AJ & K, where Cheer pheasant is currently distributed.
<p>Figure 1. Distribution map of the study area showing four localities in AJ & K, where Cheer pheasant is currently distributed. </p>
Fig. 4 in Sub-Montane Habitat Selection By A Lowland Pheasant
Fig. 4. The comparison of percentage tree cover (height>5 meters) between used areas during the three periods of the year cycle and random areas for Female 1 and Female 2 (a), and the comparison of tree density (height 0.5-3 meters) between used areas during the three periods and random areas for Female 1 and Female 2 (b).
Fig. 1. a in Sub-Montane Habitat Selection By A Lowland Pheasant
Fig. 1. a, Ranging size during different periods of the year cycle of Siamese Fireback, Female 1 and Female 2, estimated using 95% minimum convex polygons (MCP); b, 95 % MCP home range size compared in different phases of the year cycle between the two female Siamese Firebacks.
Fig. 2. A in Sub-Montane Habitat Selection By A Lowland Pheasant
Fig. 2. A comparison of slope in areas used during different periods of the year cycle and randomly chosen areas for Female 1 (a) and Female 2 (b).
Figure 1 in Variables Affecting Habitat Use Of Hume'S Pheasant In Two Disturbed Sites In Northern Thailand
Figure 1. Map showing the locations of Doi Chiang Dao and Mae- Lao Mae-Sae Wildlife Sanctuaries and Doi Khun Mae Daet located in northern Thailand.
Fig. 1 in Estimating Population Size And Distribution Of Hume'S Pheasant In Northern Thailand
Fig. 1. Study area is covered by two LANDSAT 7/ETM+ images, path 131/row 46 and path 131/row 47, which were acquired in Feb.2002.
Fig. 2 in Assessing the population of grey peacock-pheasant (Polyplectron bicalcaratum) in a Southeast Asian conservation landscape
Fig. 2. Histograms of perpendicular distances of ungrouped grey peacock-pheasant detections and estimated detection functions derived from DISTANCE software for line transects: (A1) not truncated (A2) truncated by eye at 90 m
Fig. 1 in Assessing the population of grey peacock-pheasant (Polyplectron bicalcaratum) in a Southeast Asian conservation landscape
Fig. 1. Location of line and point transect, listening posts for triangulation, and area searched for display scrapes to spot mapping, Huai Kha Khaeng Wildlife Sanctuary, Uthai Thani,Thailand
Fig. 4 in Assessing the population of grey peacock-pheasant (Polyplectron bicalcaratum) in a Southeast Asian conservation landscape
Fig. 4. The estimated density and standard error of Grey Peacockpheasant by four survey techniques in the 1200 × 1200 m study area at Huai Kha Khaeng Wildlife Sanctuary, Uthai Thani, Thailand
Fig. 16 in A new species of pheasant shell from the south-western Indian Ocean (Mollusca: Gastropoda: Vetigastropoda: Phasianellidae: Tricolia)
Fig. 16. Scanning electron micrographs of the external surface of operculum of Tricolia retrolineata sp. n., showing distinct peripheral groove underlying labral margin, paratype, maximum diameter 2.9 mm, NMSA E2476/T2241.
Figs 14, 15 in A new species of pheasant shell from the south-western Indian Ocean (Mollusca: Gastropoda: Vetigastropoda: Phasianellidae: Tricolia)
Figs 14, 15. Apices of Tricolia elongata (Krauss, 1848) and T. retrolineata sp. n.: (14) T. elongata showing white, subsutural spots on second teleoconch whorl, NMSA W4769, Cape Agulhas, Western Cape; (15) T. retrolineata sp. n. lacking spots on apical region, NMSA L5938/T2238, Ponta do Ouro, Mozambique.
Fig. 13 in A new species of pheasant shell from the south-western Indian Ocean (Mollusca: Gastropoda: Vetigastropoda: Phasianellidae: Tricolia)
Fig. 13. Tricolia elongata (Krauss, 1848), length 12.7 mm, width 6.9 mm, NMSA W4769, Cape Agulhas, Western Cape.
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